22225155 has 16 divisors (see below), whose sum is σ = 37432320. Its totient is φ = 11229408.

The previous prime is 22225129. The next prime is 22225211. The reversal of 22225155 is 55152222.

It is not a de Polignac number, because 22225155 - 2¹⁰ = 22224131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38707 + ... + 39276.

It is an arithmetic number, because the mean of its divisors is an integer number (2339520).

Almost surely, 2^22225155 is an apocalyptic number.

22225155 is a deficient number, since it is larger than the sum of its proper divisors (15207165).

22225155 is a wasteful number, since it uses less digits than its factorization.

22225155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78010.

The product of its digits is 2000, while the sum is 24.

The square root of 22225155 is about 4714.3562657058. The cubic root of 22225155 is about 281.1565892261.

Adding to 22225155 its reverse (55152222), we get a palindrome (77377377).

The spelling of 22225155 in words is "twenty-two million, two hundred twenty-five thousand, one hundred fifty-five".